For a spicier kick, add a pinch of red pepper flakes to the sausage mixture. Feel free to substitute other vegetables like mushrooms, zucchini, or kale based on your preference. Cheddar cheese or a blend of cheeses can be used instead of Monterey Jack. For a leaner option, use turkey sausage or chicken sausage instead of pork sausage. If you don't have time to refrigerate overnight, you can bake the casserole immediately, but it may require a longer baking time.
Overnight Breakfast Casserole
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PREP TIME15 mins
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COOK TIME50 mins
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TOTAL TIME9 hrs 15 mins
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SERVING12 People
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VIEWS12
Wake up to a symphony of savory flavors with this vibrant overnight breakfast casserole! A delightful medley of colorful vegetables, seasoned sausage, and fluffy eggs layered over a crispy hash brown base. Prepare it tonight, and enjoy a stress-free, crowd-pleasing breakfast tomorrow.
Ingridients
Adjust Servings
Nutrition
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Carbohydrate16 g
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Cholesterol228 mg
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Fiber2 g
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Protein18 g
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Saturated Fat8 g
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Sodium775 mg
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Sugar2 g
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Fat25 g
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Unsaturated Fat0 g
Follow The Directions
01
StepGather all your ingredients and have them prepped and ready to go.
02
StepLightly grease a 9x13 inch baking dish with cooking spray. Spread the frozen diced hash brown potatoes evenly across the bottom of the dish.
03
StepIn a large skillet, cook the bulk pork sausage over medium heat until it begins to brown (about 2 minutes). Crumble the sausage as it cooks.
04
StepAdd the chopped red and yellow bell peppers, onion, minced garlic, and dried oregano to the skillet. Continue cooking until the vegetables are tender and the sausage is no longer pink (about 5 minutes). Stir in the fresh spinach and cook until it wilts (about 1 minute).
05
StepEvenly spread the vegetable and sausage mixture over the hash browns in the baking dish. Sprinkle the shredded Monterey Jack cheese generously over the top.
06
StepIn a large bowl, whisk together the eggs, whole milk, Dijon mustard, salt, and ground black pepper until well combined. Pour the egg mixture evenly over the casserole.
07
StepCover the baking dish tightly with plastic wrap or aluminum foil and refrigerate for at least 8 hours, or preferably overnight.
08
StepThe next morning, preheat your oven to 325 degrees F (165 degrees C).
09
StepRemove the cover from the casserole and bake in the preheated oven until a knife inserted into the center comes out clean (about 50 to 60 minutes). If the top starts to brown too quickly, you can loosely tent it with foil.
10
StepRemove the casserole from the oven and let it stand for 10 minutes before serving. This allows the casserole to set and makes it easier to slice.
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Abigale Dickens
Jun 30, 2025I made this for Christmas morning, and it was perfect! So convenient to prep the night before.
Modesto Weimann
Jun 28, 2025So easy to make and tastes great! Perfect for a weekend breakfast or brunch.
Destinee Steuber
Jun 27, 2025My kids are picky eaters, but they loved this casserole! A definite keeper.
Dorris Cormier
Jun 19, 2025Next time, I'm going to try adding some green chiles for a little kick.
Ardella Bogisich
Jun 4, 2025This has become a family favorite! Thank you for sharing this recipe.
Marley Dooley
Jun 4, 2025This casserole was a HUGE hit at our brunch! Everyone raved about how flavorful and easy it was.
Jeffry Hagenes
Jun 1, 2025I added mushrooms and used cheddar cheese. It was delicious!
Ron Hessel
Jun 1, 2025I accidentally left it in the oven a little too long, and it was still delicious! Very forgiving recipe.